Quote Originally Posted by Fast355 View Post
Any input on Tow/Haulass integration on a 97? Single switch and what PCM Pin? Any way to add a light?
With the 0411 swap you can easily add T/H mode. There is no indicator light for T/H mode on the GMT400 truck. You give a single PCM pin a MOMENTARY Ground to engage T/H. If you press the button again or cycle the key, T/H is cancelled.

Jeff